Dr. Laurent Pueyo Profile

Dr. Laurent Pueyo

at Space Telescope Science Institute

SPIE Involvement:

Author

Publications (89)

PROCEEDINGS ARTICLE | September 25, 2017

James Webb Space telescope optical simulation testbed: experimental results with linear control alignment

Proc. SPIE. 10562, International Conference on Space Optics 2016

KEYWORDS: James Webb Space Telescope, Wavefronts, Space telescopes, Optical alignment, Optical simulations, Mirrors, Optical testing, Telescopes, Wavefront sensors, Astronomical imaging

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PROCEEDINGS ARTICLE | September 25, 2017

Comparison of wavefront control algorithms and first results on the high-contrast imager for complex aperture telescopes (hicat) testbed

Proc. SPIE. 10562, International Conference on Space Optics 2016

KEYWORDS: Wavefronts, Coronagraphy, Space telescopes, Speckle, Telescopes, Deformable mirrors, Calibration, Wavefront sensors, Actuators, Imaging systems

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PROCEEDINGS ARTICLE | September 13, 2017

The LUVOIR architecture ``A'' coronagraph instrument

Proc. SPIE. 10398, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII

KEYWORDS: Coronagraphy, Wavefronts, Sensors, Planets, Channel projecting optics, Wavefront sensors, Stars, Imaging systems, Mirrors, Telescopes

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In preparation for the Astro 2020 Decadal Survey NASA has commissioned the study four flagship missions spanning to a wide range of observable wavelengths: the Origins Space Telescope (OST, formerly the Far-Infrared Surveyor), Lynx (formerly the X-ray Surveyor), the Large UV/Optical/Infrared Surveyor (LUVOIR) and the Habitable Exoplanet Imager (HabEx). One of the key scientific objectives of the latter two is the detection and characterization of the earth-like planets around nearby stars using the direct imaging technique (along with a broad range of investigations regarding the architecture of and atmospheric composition exoplanetary systems using this technique). As a consequence dedicated exoplanet instruments are being studied for these mission concepts. This paper discusses the design of the coronagraph instrument for the architecture “A” (15 meters aperture) of LUVOIR. The material presented in this paper is aimed at providing an overview of the LUVOIR coronagraph instrument. It is the result of four months of discussions with various community stakeholders (scientists and technologists) regarding the instrument’s basic parameters followed by meticulous design work by the the GSFC Instrument Design Laboratory team. In the first section we review the main science drivers, presents the overall parameters of the instrument (general architecture and backend instrument) and delve into the details of the currently envisioned coronagraph masks along with a description of the wavefront control architecture. Throughout the manuscript we describe the trades we made during the design process. Because the vocation of this study is to provide a baseline design for the most ambitious earth-like finding instrument that could be possibly launched into the 2030’s, we have designed an complex system privileged that meets the ambitious science goals out team was chartered by the LUVOIR STDT exoplanet Working Group. However in an effort to minimize technological risk we tried to maximize the number of technologies that will be matured by the WFIRST coronagraph instruments.

PROCEEDINGS ARTICLE | September 12, 2017

Polynomial apodized vortex coronagraphs for obscured telescope pupils

Proc. SPIE. 10400, Techniques and Instrumentation for Detection of Exoplanets VIII

KEYWORDS: Coronagraphy, Mirrors, Telescopes, Apodization, Stars, Optical instrument design, Space telescopes, Exoplanets, Solids, Secondary tip-tilt mirrors

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PROCEEDINGS ARTICLE | September 5, 2017

The Large UV/Optical/Infrared (LUVOIR) Surveyor: Decadal Mission concept design update

Proc. SPIE. 10398, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII

KEYWORDS: Ultraviolet radiation, Space telescopes, Astronomical imaging, Imaging systems, UV optics, Stars, Imaging spectroscopy, Near infrared spectroscopy, Spectroscopes, Coronagraphy

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PROCEEDINGS ARTICLE | September 5, 2017

James Webb Space Telescope optical simulation testbed IV: linear control alignment of the primary segmented mirror and the secondary mirror

Proc. SPIE. 10398, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII

KEYWORDS: Wavefronts, James Webb Space Telescope, Segmented mirrors, Wavefront sensors, Space telescopes, Optical alignment, Mirrors, Optical simulations, Optical testing, Telescopes

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PROCEEDINGS ARTICLE | September 1, 2017

Capabilities of ACAD-OSM, an active method for the correction of aperture discontinuities

Proc. SPIE. 10400, Techniques and Instrumentation for Detection of Exoplanets VIII

KEYWORDS: Deformable mirrors, Exoplanets, Imaging systems, Coronagraphy, Active optics, Actuators, Wavefronts, Control systems, Interferometry, Adaptive optics

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PROCEEDINGS ARTICLE | September 1, 2017

Optimization of pyKLIP's forward model matched filter for the GPI Exoplanet Survey

Proc. SPIE. 10400, Techniques and Instrumentation for Detection of Exoplanets VIII

KEYWORDS: Exoplanets, Point spread functions, Planets, Image filtering, Gemini Planet Imager, Receivers, Algorithm development, Image processing, Signal to noise ratio, Data processing

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PROCEEDINGS ARTICLE | September 1, 2017

Post-processing of the HST STIS coronagraphic observations

Proc. SPIE. 10400, Techniques and Instrumentation for Detection of Exoplanets VIII

KEYWORDS: Space telescopes, Telescopes, Imaging systems, Coronagraphy, Exoplanets, Stars, Hubble Space Telescope, Calibration, Adaptive optics, Gemini Planet Imager

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PROCEEDINGS ARTICLE | September 1, 2017

Fundamental limits to high-contrast wavefront control

Proc. SPIE. 10400, Techniques and Instrumentation for Detection of Exoplanets VIII

KEYWORDS: Wavefronts, Deformable mirrors, Error analysis, Wave propagation, Spatial frequencies, Actuators, Numerical simulations, Aerospace engineering, Control systems, Interferometry

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PROCEEDINGS ARTICLE | September 1, 2017

Sensitivity analysis for high-contrast missions with segmented telescopes

Proc. SPIE. 10400, Techniques and Instrumentation for Detection of Exoplanets VIII

KEYWORDS: Image segmentation, Space telescopes, Telescopes, Imaging spectroscopy, Wavefronts, Exoplanets, Coronagraphy, Spectroscopy, Planets, Systems modeling

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PROCEEDINGS ARTICLE | July 29, 2016

Correcting for the effects of pupil discontinuities with the ACAD method

Proc. SPIE. 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave

KEYWORDS: Space telescopes, Telescopes, Coronagraphy, Mirrors, Deformable mirrors, Wavefronts, Actuators, Point spread functions, Geometrical optics, Apodization

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The current generation of ground-based coronagraphic instruments uses deformable mirrors to correct for phase errors and to improve contrast levels at small angular separations. Improving these techniques, several space and ground based instruments are currently developed using two deformable mirrors to correct for both phase and amplitude errors. However, as wavefront control techniques improve, more complex telescope pupil geometries (support structures, segmentation) will soon be a limiting factor for these next generation coronagraphic instruments. The technique presented in this proceeding, the Active Correction of Aperture Discontinuities method, is taking advantage of the fact that most future coronagraphic instruments will include two deformable mirrors, and is proposing to find the shapes and actuator movements to correct for the effect introduced by these complex pupil geometries. For any coronagraph previously designed for continuous apertures, this technique allow to obtain similar performance in contrast with a complex aperture (with segmented and secondary mirror support structures), with high throughput and flexibility to adapt to changing pupil geometry (e.g. in case of segment failure or maintenance of the segments). We here present the results of the parametric analysis realized on the WFIRST pupil for which we obtained high contrast levels with several deformable mirror setups (size, separation between them), coronagraphs (Vortex charge 2, vortex charge 4, APLC) and spectral bandwidths. However, because contrast levels and separation are not the only metrics to maximize the scientific return of an instrument, we also included in this study the influence of these deformable mirror shapes on the throughput of the instrument and sensitivity to pointing jitters. Finally, we present results obtained on another potential space based telescope segmented aperture. The main result of this proceeding is that we now obtain comparable performance than the coronagraphs previously designed for WFIRST. First result from the parametric analysis strongly suggest that the 2 deformable mirror set up (size and distance between them) have a important impact on the performance in contrast and throughput of the final instrument.

PROCEEDINGS ARTICLE | July 29, 2016

Data processing and algorithm development for the WFIRST coronagraph: comparison of RDI and ADI strategies and impact of spatial sampling on post-processing

Proc. SPIE. 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave

KEYWORDS: Exoplanets, Point spread functions, Space telescopes, Telescopes, Point spread functions, Stars, Algorithm development, Coronagraphy, Speckle, Planets, Iterated function systems

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Direct detection and characterization of mature giant or sub-Neptune exoplanets in the visible will require space- based instruments optimized for high-contrast imaging with contrasts of 10^-9. In this context, the coronagraph instrument (CGI) on the Wide-Field Infrared Survey Telescope (WFIRST) will reach raw contrasts of about 10^-8 or better using state-of-the-art starlight suppression and wavefront control techniques. A ten-fold contrast improvement is therefore required using post-processing techniques in order to detect 10^-9 planets from speckles. Post-processing techniques that are successful on both ground-based and space-based instruments need to be validated at such high contrast levels. In this communication, we investigate speckle subtraction techniques for different observation strategies and hardware parameters on WFIRST-like simulated images in the presence of deformable mirrors and an hybrid lyot coronagraph (HLC). We compare the contrast gain after post-processing in both speckle-noise and photon-noise dominated regimes for two different observing scenarios: the reference star differential imaging (RDI) and the angular differential imaging (ADI). We find that the ADI observing strategy is more robust to speckle and photon noises than the RDI observing strategy, enabling up to a threefold gain with respect to the latter. Thus, we recommend that the telescope be able to roll by at least 13° off nominal. We investigated the impact of spatial sampling on post-processed sensitivity, in the context of design trade studies for the Integral Field Spectrograph (IFS) component of the instrument. Our preliminary results suggest that the spatial sampling can be halved from the baseline sampling rate (~4 lenslets per λ/D) without any degradation in final contrast, thereby reducing the integration time required for spectroscopic characterization. In the speckle-noise dominated regime, we also find that at Nyquist sampling or higher, sub-pixel reference- to-target offsets have a negligible impact on the level of residual speckles after post-processing.

PROCEEDINGS ARTICLE | July 29, 2016

Lyot coronagraph design study for large, segmented space telescope apertures

Proc. SPIE. 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave

KEYWORDS: Space telescopes, Image segmentation, Exoplanets, Optical instrument design, Telescopes, Image segmentation, Coronagraphy, Point spread functions, Tolerancing, Binary data, Apodization

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PROCEEDINGS ARTICLE | July 29, 2016

High-contrast imager for Complex Aperture Telescopes (HiCAT). 4. Status and wavefront control development

Proc. SPIE. 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave

KEYWORDS: Space telescopes, Telescopes, Wavefronts, Coronagraphy, Speckle, Point spread functions, Mirrors, Cameras, Infrared telescopes, Ultraviolet telescopes

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Segmented telescopes are a possible approach to enable large-aperture space telescopes for the direct imaging and spectroscopy of habitable worlds. However, the increased complexity of their aperture geometry, due to their central obstruction, support structures and segment gaps, makes high-contrast imaging very challenging. The High-contrast imager for Complex Aperture Telescopes (HiCAT) was designed to study and develop solutions for such telescope pupils using wavefront control and starlight suppression. The testbed design has the flexibility to enable studies with increasing complexity for telescope aperture geometries starting with off-axis telescopes, then on-axis telescopes with central obstruction and support structures (e.g. the Wide Field Infrared Survey Telescope [WFIRST]), up to on-axis segmented telescopes e.g. including various concepts for a Large UV, Optical, IR telescope (LUVOIR), such as the High Definition Space Telescope (HDST). We completed optical alignment in the summer of 2014 and a first deformable mirror was successfully integrated in the testbed, with a total wavefront error of 13nm RMS over a 18mm diameter circular pupil in open loop. HiCAT will also be provided with a segmented mirror conjugated with a shaped pupil representing the HDST configuration, to directly study wavefront control in the presence of segment gaps, central obstruction and spider. We recently applied a focal plane wavefront control method combined with a classical Lyot coronagraph on HiCAT, and we found limitations on contrast performance due to vibration effect. In this communication, we analyze this instability and study its impact on the performance of wavefront control algorithms. We present our Speckle Nulling code to control and correct for wavefront errors both in simulation mode and on testbed mode. This routine is first tested in simulation mode without instability to validate our code. We then add simulated vibrations to study the degradation of contrast performance in the presence of these effects.

PROCEEDINGS ARTICLE | July 29, 2016

Small-grid dithers for the JWST coronagraphs

Proc. SPIE. 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave

KEYWORDS: James Webb Space Telescope, Point spread functions, Stars, Target acquisition, Space telescopes, Coronagraphy, Mirrors, Detection and tracking algorithms, Optimization (mathematics), Image processing

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PROCEEDINGS ARTICLE | July 29, 2016

James Webb Space Telescope optical simulation testbed III: first experimental results with linear-control alignment

Proc. SPIE. 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave

KEYWORDS: James Webb Space Telescope, Wavefront sensors, Space telescopes, Mirrors, Optical simulations, Wavefronts, Telescopes, Optical alignment, Cameras, Zemax

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PROCEEDINGS ARTICLE | July 27, 2016

Laser guide star spot shrinkage for affordable wavefront sensors

Proc. SPIE. 9909, Adaptive Optics Systems V

KEYWORDS: Sensors, Laser guide stars, Wavefront sensors, Zemax, Laser guide stars, Wavefront sensors, Sensors, Optical design, Distortion, Freeform optics, Mirrors, Staring arrays, Microlens

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PROCEEDINGS ARTICLE | July 22, 2016

Apodized vortex coronagraph designs for segmented aperture telescopes

Proc. SPIE. 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II

KEYWORDS: Optical instrument design, Planets, Space telescopes, Telescopes, Image segmentation, Optical instrument design, Thirty Meter Telescope, Space telescopes, Telescopes, Image segmentation, Mirrors, Coronagraphy, Speckle, Point spread functions

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PROCEEDINGS ARTICLE | July 15, 2016

Pandeia: a multi-mission exposure time calculator for JWST and WFIRST

Proc. SPIE. 9910, Observatory Operations: Strategies, Processes, and Systems VI

KEYWORDS: James Webb Space Telescope, Observatories, Telescopes, Signal to noise ratio, Image quality, Spectroscopy, Quality measurement, Imaging spectroscopy, Electroluminescent displays, Imaging systems

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SPIE Journal Paper | December 23, 2015

Wide-Field Infrared Survey Telescope–Astrophysics Focused Telescope Assets coronagraphic operations: lessons learned from the Hubble Space Telescope and the James Webb Space Telescope

Debes, John , Ygouf, Marie , Choquet, Elodie , Hines, Dean , Perrin, Marshall , Golimowski, David , Lajoie, Charles-Phillipe , Mazoyer, Johan , Pueyo, Laurent , Soummer, Rémi , van der Marel, Roeland

JATIS Vol. 2 Issue 01

KEYWORDS: Coronagraphy, James Webb Space Telescope, Point spread functions, Space telescopes, Telescopes, Infrared telescopes, Stars, Sensors, Space operations, Astronomical telescopes

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SPIE Journal Paper | November 23, 2015

Active compensation of aperture discontinuities for WFIRST-AFTA: analytical and numerical comparison of propagation methods and preliminary results with a WFIRST-AFTA-like pupil

Mazoyer, Johan , Pueyo, Laurent , Norman, Colin , N’Diaye, Mamadou , van der Marel, Roeland , Soummer, Rémi

JATIS Vol. 2 Issue 01

KEYWORDS: Coronagraphy, Apodization, Numerical simulations, Space telescopes, Telescopes, Mirrors, Solids, Actuators, Diffraction, Wave propagation

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The new frontier in the quest for the highest contrast levels in the focal plane of a coronagraph is now the correction of the large diffraction artifacts introduced at the science camera by apertures of increasing complexity. Indeed, the future generation of space- and ground-based coronagraphic instruments will be mounted on on-axis and/or segmented telescopes; the design of coronagraphic instruments for such observatories is currently a domain undergoing rapid progress. One approach consists of using two sequential deformable mirrors (DMs) to correct for aberrations introduced by secondary mirror structures and segmentation of the primary mirror. The coronagraph for the WFIRST-AFTA mission will be the first of such instruments in space with a two-DM wavefront control system. Regardless of the control algorithm for these multiple DMs, they will have to rely on quick and accurate simulation of the propagation effects introduced by the out-of-pupil surface. In the first part of this paper, we present the analytical description of the different approximations to simulate these propagation effects. In Appendix A, we prove analytically that in the special case of surfaces inducing a converging beam, the Fresnel method yields high fidelity for simulations of these effects. We provide numerical simulations showing this effect. In the second part, we use these tools in the framework of the active compensation of aperture discontinuities (ACAD) technique applied to pupil geometries similar to WFIRST-AFTA. We present these simulations in the context of the optical layout of the high-contrast imager for complex aperture telescopes, which will test ACAD on a optical bench. The results of this analysis show that using the ACAD method, an apodized pupil Lyot coronagraph, and the performance of our current DMs, we are able to obtain, in numerical simulations, a dark hole with a WFIRST-AFTA-like. Our numerical simulation shows that we can obtain contrast better than 2×10−9 in monochromatic light and better than 3×10−8 with 10% bandwidth between 5 and 14 λ/D.

PROCEEDINGS ARTICLE | September 16, 2015

Data processing and algorithm development for the WFIRST-AFTA coronagraph: reduction of noise free simulated images, analysis and spectrum extraction with reference star differential imaging

Proc. SPIE. 9605, Techniques and Instrumentation for Detection of Exoplanets VII

KEYWORDS: Point spread functions, Planets, Coronagraphy, Image processing, Data modeling, Monochromatic aberrations, Stars, Exoplanets, Iterated function systems, Computer simulations

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PROCEEDINGS ARTICLE | September 16, 2015

Active correction of aperture discontinuities (ACAD) for space telescope pupils: a parametic analysis

Proc. SPIE. 9605, Techniques and Instrumentation for Detection of Exoplanets VII

KEYWORDS: Coronagraphy, Actuators, Space telescopes, Apodization, Point spread functions, Stars, Telescopes, Deformable mirrors, Solids, Mirrors

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PROCEEDINGS ARTICLE | September 16, 2015

WFIRST-AFTA coronagraph performance: feedback from post-processing studies to overall design

Proc. SPIE. 9605, Techniques and Instrumentation for Detection of Exoplanets VII

KEYWORDS: Coronagraphy, Stars, Planets, Point spread functions, Calibration, Wavefronts, Exoplanets, Speckle, Polarization, Image processing

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PROCEEDINGS ARTICLE | September 16, 2015

Archival Legacy Investigations of Circumstellar Environments (ALICE): Statistical assessment of point source detections

Proc. SPIE. 9605, Techniques and Instrumentation for Detection of Exoplanets VII

KEYWORDS: Signal to noise ratio, Stars, Point spread functions, Statistical analysis, Coronagraphy, Exoplanets, Planets, Speckle, Environmental sensing, Photometry

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PROCEEDINGS ARTICLE | September 11, 2015

High-contrast imager for complex aperture telescopes (HiCAT): 3. first lab results with wavefront control

Proc. SPIE. 9605, Techniques and Instrumentation for Detection of Exoplanets VII

KEYWORDS: Coronagraphy, Wavefronts, Telescopes, Image segmentation, Actuators, Speckle, Humidity, Space telescopes, Mirrors, Imaging systems

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PROCEEDINGS ARTICLE | August 28, 2014

Updated point spread function simulations for JWST with WebbPSF

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Point spread functions, James Webb Space Telescope, Device simulation, Spectroscopy, Instrument modeling, Wavefront sensors, Spectroscopes, Wavefronts, Coronagraphy, Telescopes

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PROCEEDINGS ARTICLE | August 28, 2014

High-contrast Imager for Complex Aperture Telescopes (HICAT): II. Design overview and first light results

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Optics manufacturing, Optical alignment, Coronagraphy, Mirrors, Wavefronts, Telescopes, Space telescopes, Wavefront sensors, Cameras, Imaging systems

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PROCEEDINGS ARTICLE | August 28, 2014

Demonstration of vortex coronagraph concepts for on-axis telescopes on the Palomar Stellar Double Coronagraph

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Coronagraphy, Space telescopes, Telescopes, Virtual colonoscopy, Data modeling, Prototyping, Manufacturing, Aluminum, Observatories, Adaptive optics

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PROCEEDINGS ARTICLE | August 28, 2014

Optimal apodizations for on-axis vector vortex coronagraphs

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Mirrors, Coronagraphy, Apodization, Point spread functions, Telescopes, Planets, Space telescopes, Manufacturing, Optical instrument design, Deformable mirrors

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PROCEEDINGS ARTICLE | August 28, 2014

Archival legacy investigations of circumstellar environments: overview and first results

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Point spread functions, Stars, Coronagraphy, Databases, Planets, Space telescopes, Telescopes, Image processing, Signal to noise ratio, Target detection

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PROCEEDINGS ARTICLE | August 28, 2014

High contrast imaging with an arbitrary aperture: active correction of aperture discontinuities: fundamental limits and practical trade- offs

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Coronagraphy, Point spread functions, Wavefronts, Telescopes, Actuators, Image segmentation, Deformable mirrors, Space telescopes, Geometrical optics, James Webb Space Telescope

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PROCEEDINGS ARTICLE | August 28, 2014

Small-grid dithering strategy for improved coronagraphic performance with JWST

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Coronagraphy, Stars, James Webb Space Telescope, Point spread functions, Target acquisition, Detection and tracking algorithms, Space telescopes, Planets, Telescopes, Observatories

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PROCEEDINGS ARTICLE | August 7, 2014

The Gemini planet imager: first light and commissioning

Proc. SPIE. 9148, Adaptive Optics Systems IV

KEYWORDS: Gemini Planet Imager, Adaptive optics, Stars, Coronagraphy, Telescopes, Gemini Observatory, Calibration, Wavefront sensors, Planets, Iterated function systems

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PROCEEDINGS ARTICLE | August 2, 2014

Analyzing the first JWST-NIRISS NRM test data

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Point spread functions, Data modeling, Sensors, James Webb Space Telescope, Capacitance, Infrared telescopes, Visibility, Phase measurement, Interferometry, Space telescopes

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PROCEEDINGS ARTICLE | August 2, 2014

James Webb Space Telescope Optical Simulation Testbed I: overview and first results

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: James Webb Space Telescope, Mirrors, Image segmentation, Wavefront sensors, Telescopes, Phase retrieval, Adaptive optics, Optical alignment, Space telescopes, Sensors

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PROCEEDINGS ARTICLE | August 2, 2014

Apodized Pupil Lyot Coronagraphs: development of designs with reduced IWA and robustness to low-order aberrations

Proc. SPIE. 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave

KEYWORDS: Coronagraphy, Apodization, Gemini Planet Imager, Stars, Telescopes, Space telescopes, Optical instrument design, Imaging systems, Exoplanets, Cameras

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PROCEEDINGS ARTICLE | July 28, 2014

Gemini planet imager observational calibrations VI: photometric and spectroscopic calibration for the integral field spectrograph

Proc. SPIE. 9147, Ground-based and Airborne Instrumentation for Astronomy V

KEYWORDS: Gemini Planet Imager, Calibration, Satellites, Point spread functions, Sensors, Stars, Spectral calibration, Coronagraphy, Gemini Observatory, Spectroscopy

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PROCEEDINGS ARTICLE | July 28, 2014

Gemini planet imager observational calibrations V: astrometry and distortion

Proc. SPIE. 9147, Ground-based and Airborne Instrumentation for Astronomy V

KEYWORDS: Gemini Planet Imager, Distortion, Iterated function systems, Monte Carlo methods, Planets, Stars, Coronagraphy, Calibration, Telescopes, Point spread functions

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PROCEEDINGS ARTICLE | July 28, 2014

Three possible types of coronagraphs for the E-ELT PCS instrument

Proc. SPIE. 9147, Ground-based and Airborne Instrumentation for Astronomy V

KEYWORDS: Coronagraphy, Surface plasmons, Monochromatic aberrations, Point spread functions, Image transmission, Spherical lenses, Wavefronts, Adaptive optics, Telescopes, Visible radiation

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PROCEEDINGS ARTICLE | July 24, 2014

A format standard for efficient interchange of high-contrast direct imaging science products

Proc. SPIE. 9147, Ground-based and Airborne Instrumentation for Astronomy V

KEYWORDS: Coronagraphy, Standards development, James Webb Space Telescope, Imaging systems, Space telescopes, Stars, Image processing, Telescopes, Planets, Signal to noise ratio

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PROCEEDINGS ARTICLE | July 24, 2014

Gemini planet imager observational calibrations X: non-redundant masking on GPI

Proc. SPIE. 9147, Ground-based and Airborne Instrumentation for Astronomy V

KEYWORDS: Gemini Planet Imager, Calibration, Adaptive optics, Wavefronts, Telescopes, Diagnostics, Actuators, Coronagraphy, Point spread functions, Iterated function systems

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PROCEEDINGS ARTICLE | July 24, 2014

Gemini planet imager observational calibrations VIII: characterization and role of satellite spots

Proc. SPIE. 9147, Ground-based and Airborne Instrumentation for Astronomy V

KEYWORDS: Satellites, Stars, Gemini Planet Imager, Signal to noise ratio, Satellite imaging, Polarimetry, Photonic integrated circuits, Calibration, Photometry, Coronagraphy

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PROCEEDINGS ARTICLE | July 21, 2014

L'-band AGPM vector vortex coronagraph's first light on LBTI/LMIRCam

Proc. SPIE. 9148, Adaptive Optics Systems IV

KEYWORDS: Coronagraphy, Planets, Telescopes, Stars, Space telescopes, Signal to noise ratio, Adaptive optics, Principal component analysis, Point spread functions, Spiral phase plates

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PROCEEDINGS ARTICLE | July 8, 2014

Gemini Planet Imager observational calibrations I: Overview of the GPI data reduction pipeline

Proc. SPIE. 9147, Ground-based and Airborne Instrumentation for Astronomy V

KEYWORDS: Gemini Planet Imager, Calibration, Point spread functions, Gemini Observatory, Polarimetry, Iterated function systems, Astronomy, Electroluminescent displays, Spectrographs, Software development

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PROCEEDINGS ARTICLE | September 27, 2013

High-contrast imaging with an arbitrary aperture: active correction of aperture discontinuities